OpenLDAP & SASL

Hello,
I'm trying to use SASL Authentication with OpenLDAP 2.0.7 on a RH 2.2.15
machine.
When I run the command sasldblistusers, one of the lines I get is:
user: uid=malere realm: rdnt03 mech: DIGEST-MD5
Then I try to run a ldapsearch command with the following sintax:
#ldapsearch -b "o=JNDITutorial" -d 256 -U "uid=malere" -Y DIGEST-MD5 "cn=Ted Geisel"
SASL/DIGEST-MD5 authentication started
ber_flush: 24 bytes to sd 3
request 1 done
Please enter your password:
ber_flush: 69 bytes to sd 3
request 2 done
ldap_sasl_interactive_bind_s: Unknown error
additional info: no secret in database
#
Would you have any idea of what's going on ? Any help is appreciated.
Thanks in advance,
Luiz Malere.